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EP 4 241 373 A1

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(43) Date of publication: 13.09.2023 Bulletin 2023/37 (21) Application number: 21700168.4 (22) Date of filing: 05.01.2021

(51) International Patent Classification (IPC):  H02M 1/42(2007.01) H02M 7/483(2007.01) H02M 1/00(2006.01) H02J 3/00(2006.01) H02M 1/36(2007.01) (52) Cooperative Patent Classification (CPC): H02M 7/4835; H02M 1/36; H02M 1/0003 (86) International application number: PCT/EP2021/050072 (87) International publication number: WO 2022/148528 (14.07.2022 Gazette 2022/28)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: Huawei Technologies Co., Ltd. Shenzhen, Guangdong 518129 (CN)	(72) Inventor: FREIJEDO FERNÁNDEZ, Francisco, Daniel 80992 Munich (DE) (74) Representative: Huawei European IPR  Huawei Technologies Duesseldorf GmbH Riesstraße 25 80992 München 80992 München (DE)